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. 2021 Dec 6;118(50):e2102149118. doi: 10.1073/pnas.2102149118

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Fig. 6. — Simulation results of model dynamics ([1] and [2]) with self-reinforcement levels $α_{r}$ and $α_{d}$ changing as shown in Fig. 5C in response to policy mood input $I_{r}$ and $I_{d}$ shown in Fig. 5B according to dynamics ([6] and [7]) with nonlinear function $f$ defined by [5] with $U_{r} = L_{r} = U_{d} = L_{d} = 0.45$ . Initial conditions and model parameters: $x_{r} (t_{0}) = 0.3$ , $x_{d} (t_{0}) = - 0.3$ , $b_{r} = 0.1$ , $b_{d} = - 0.1$ , $τ_{x} = 4$ , and $t_{0} = 1959$ .